Advanced R Programming is being written in an open manner by Hadley Wickham (ggplot2). It’s nearing completion & printing, but the Wiki form of the content will remain online in perpetuity. R is a really difficult language to google answers to (it’s all short-hand functions & punctuation <- $ ^ which gets stripped or is not very searchable), and the documentation I’ve found so far has been lacklustre. The little I’ve read of these notes seem absolutely fantastic.
via discussion on ever informative HN: https://news.ycombinator.com/item?id=6748443
